Powertrain, generic (extended)

P2730 Pressure Control Solenoid E Control Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleNot required
Limp modePossible

P2730 is stored when the control line of solenoid E sits too high, pointing to contact with a supply voltage. GM's Allison 1000 logic looks for a power short at the PCS 1 output and treats it as Type A. Its 2016 six-speed tables word the code as circuit high for an open or a power short, so there a broken wire may show up as P2730 instead of P2727. The 2023 Corvette dual-clutch TCM switches the driver on and compares the sense voltage with a limit that depends on supply, about 0.7 V at low and 1.1 V at high battery voltage (Type A); Ford's TR9070 calls the same fault shorted load. No public bulletin links P2730 to a particular repair, so standard tracing of harness, connector and solenoid applies.

Likely causes

Control wire chafed against a supply circuit
Open line on units that report it as high (GM six-speed)
Defective solenoid E
TCM driver fault

Symptoms

  • MIL on and transmission in fail-safe
  • Harsh or missing shifts
  • Code sets again immediately after clearing

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–1,200
Time0.5–5 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

pressure control solenoid ewiring harness

Related codes

P2725P2727P2728P2729P2721

References: gsi.ext.gm.com, gsi.ext.gm.com, gsi.ext.gm.com, fordservicecontent.com.